搜题请搜索小程序“爱下问搜题”
问题
判断题
一般万用表上有两个切换开关，一个用来改变测量种类；另一个用来改变量程。
答案
参考答案：
对
解答题
已知B（5，0），C（-5，0）是△ABC的两个顶点，且
sinB-SinC=
3
5
sinA
，求顶点A的轨迹方程．
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补全对话，情景问答
从II栏中选出与I栏各句对应的应答语。
I
( )1. Who is the letter from?
( )2. Do you like English?
( )3. Where does Tom live now?
( )4. What does the man do?
( )5. May I take your order?
II
A. He lives in Guizhou.
B. Rice and chickens, please.
C. It's from my friend.
D. He is a driver.
E. Yes, I like it very much.
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